32210 vs 30210 Tapered Roller Bearings: Dimension Comparison
The primary difference between a 32210 and a 30210 tapered roller bearing is their total width, despite both sharing an identical 50 mm bore and 90 mm outer diameter. The 32210 tapered roller bearing measures 24.75 mm in width, whereas the 30210 bearing measures 21.75 mm in width. This 3 mm structural variance changes the internal geometry, load rating, and mounting footprint, making the two parts non-interchangeable in precision mechanical assemblies.
Technicians and procurement managers in Pakistan frequently compare these two part numbers because their matching shaft and housing boundary dimensions make them appear identical on paper. However, installing a 30210 where a 32210 is specified creates severe axial float, improper gear mesh, and premature component failure.
Understanding how the ISO dimension series separates the 32200 Series from the 30200 Series ensures accurate replacement, proper preload setting, and reliable performance across industrial gearboxes, automotive wheel hubs, and agricultural machinery.
What is the difference between 32210 and 30210 tapered roller bearings?
The main difference between 32210 and 30210 tapered roller bearings lies in their total width and internal load-carrying cross-section. The HI-TEC 32210 belongs to the 32200 Series with a width of 24.75 mm, while the HI-TEC 30210 belongs to the 30200 Series with a width of 21.75 mm. Both bearings share a 50 mm bore (inner diameter) and a 90 mm outer diameter, but the 3 mm wider profile of the 32210 allows for larger rolling elements that handle higher heavy-duty dynamic loads[1].
| Specification Parameter | HI-TEC 32210 Bearing | HI-TEC 30210 Bearing |
|---|---|---|
| Bearing Type | Tapered Roller Bearing | Tapered Roller Bearing |
| Bearing Series | 32200 Series | 30200 Series |
| Bore Size (Inner Diameter) | 50 mm | 50 mm |
| Outside Diameter (OD) | 90 mm | 90 mm |
| Total Width (T) | 24.75 mm | 21.75 mm |
| Product Listing | 32210 Tapered Roller Bearing | 30210 Tapered Roller Bearing |
Under international ISO 355 boundary standards, the second digit in the series designation indicates the width series[1]. The '2' in the 32200 Series represents a wider, heavier cross-section compared to the '0' in the 30200 Series[1]. This extra 3 mm width in the 32210 accommodates longer internal tapered rollers, which increases the contact area across the raceway to support elevated combined radial and axial thrust loads in demanding industrial machinery.
Parts in this article
| Part (bore x OD x width) | Variants | Price |
|---|---|---|
| 32210 50 x 90 x 24.75 mm 32200 Series | 32210 · In stock | Ask today's price on WhatsApp |
| 30210 50 x 90 x 21.75 mm 30200 Series | 30210 · In stock | Ask today's price on WhatsApp |
Are 32210 and 30210 bearings interchangeable in equipment assemblies?
No, 32210 and 30210 tapered roller bearings are not direct drop-in substitutes in mechanical equipment assemblies. The 3 mm width difference between the 30210 and 32210 tapered roller bearings prevents direct interchangeability in shaft assemblies because shaft shoulder locations, locknut threads, and housing retaining rings are engineered for a specific total width[1].
Attempting to substitute a 30210 (21.75 mm width) into a housing built for a 32210 (24.75 mm width) leaves an uncompensated 3 mm axial gap. This gap prevents proper preloading, leads to severe shaft endplay, misaligns gear sets, and accelerates bearing race degradation[2]. Conversely, forcing a wider 32210 into a 30210 cavity binds the assembly, causes excessive internal friction, and leads to immediate thermal expansion failure. For complex machinery applications, review our guide on what is a tapered roller bearing to select the correct load profile.
Selecting the precise replacement requires matching the exact part number from your machinery catalog. Buyers in Pakistan can confirm pricing and live availability for HI-TEC 32210 and 30210 bearings via WhatsApp at +92-348-5563390. You can also explore our complete tapered roller bearings collection or our dedicated 30200 series bearings to find verified replacement parts.
Need a price? Ask HI-TEC BEARINGS on WhatsApp Send the part number (32210, 30210, or any other) to ask for today's price and availability. Open WhatsApp |
Frequently Asked Questions
What is the difference between 32210 and 30210 tapered roller bearings?
The primary difference is their width. While both bearings feature a 50 mm bore and a 90 mm outer diameter, the 32210 bearing has a width of 24.75 mm, whereas the 30210 bearing measures 21.75 mm wide.
Are 32210 and 30210 bearings interchangeable?
No, they are not interchangeable. The 3 mm width difference alters the axial clearance, shaft shoulder position, and internal preload, which causes mechanical misalignment or binding if swapped.
What are the exact dimensions of a 32210 bearing?
The HI-TEC 32210 tapered roller bearing features an inner bore of 50 mm, an outside diameter of 90 mm, and a total assembly width of 24.75 mm.
What are the exact dimensions of a 30210 bearing?
The HI-TEC 30210 tapered roller bearing features an inner bore of 50 mm, an outside diameter of 90 mm, and a total assembly width of 21.75 mm.
References
- cdn.standards.iteh.ai › ISO-355-2019Rolling bearings — Tapered roller bearings - iTeh Standards. https://cdn.standards.iteh.ai/samples/73836/21cd4e7a3909498fa3888571da53779c/ISO-355-2019.pdf (2026-02-03)
- [PDF] Tapered roller bearings, single row Technical specification. https://www.bsc-ind.com/ASSETS/DOCUMENTS/ITEMS/EN/SKF_30202_Specification_Sheet.pdf (2026-04-14)